EP1387147A1 - Système de mesure pour la détection de la valeur absolue d'angles ou de déplacements - Google Patents

Système de mesure pour la détection de la valeur absolue d'angles ou de déplacements Download PDF

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Publication number
EP1387147A1
EP1387147A1 EP03015252A EP03015252A EP1387147A1 EP 1387147 A1 EP1387147 A1 EP 1387147A1 EP 03015252 A EP03015252 A EP 03015252A EP 03015252 A EP03015252 A EP 03015252A EP 1387147 A1 EP1387147 A1 EP 1387147A1
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EP
European Patent Office
Prior art keywords
absolute value
measuring
measuring system
track
sections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03015252A
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German (de)
English (en)
Inventor
Anton Rodi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE2002130471 external-priority patent/DE10230471B4/de
Application filed by Individual filed Critical Individual
Publication of EP1387147A1 publication Critical patent/EP1387147A1/fr
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/249—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using pulse code
    • G01D5/2492—Pulse stream
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/249—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using pulse code
    • G01D5/2492—Pulse stream
    • G01D5/2495—Pseudo-random code

Definitions

  • the invention relates to a measuring system for absolute value detection of angles or Because of the features of the preamble of claim 1.
  • the object of the invention is a measuring system with absolute value acquisition to create that is applicable to large scales, not a very large one Number of bits in the scale coding with the disadvantages caused thereby and compared to the measuring system of the main patent is simplified.
  • the length scale according to the invention is inexpensive for any length measurement sections producible and usable without problems.
  • the entire scanning sensor is in its Components for the most universal application possible for angle and displacement measuring systems suitable and usable for any measuring length.
  • inventive Design of the length measuring device meets the diverse requirements Taken into account and a universal and inexpensive device version also created for a wide variety of tasks.
  • the sections must be recorded and required even when the mains supply is switched off therefore a lower energy or electricity consumption, so that a suitable one Auxiliary energy, such as B. battery, can be provided.
  • a suitable one Auxiliary energy such as B. battery
  • All so far Known absolute value measuring systems have a power consumption that is far too high for this from typically 20 mA to greater than 200 mA, so that a battery auxiliary power is out of the question. Therefore, a further sensor arrangement according to the invention proposed with a suitable evaluation circuit, with the least possible effort and thus allows energy consumption to count the sections of the route to capture. This additional sensor arrangement is in its design and therefore Power consumption strongly depends on the type of detection of the absolutely coded sections dependent.
  • the absolutely coded sections yourself to record the sections of the section with the further sensor arrangement, this has the advantage of being used the existing scale track.
  • the ones provided with a PRC code as an example and with 12-bit absolutely coded sections offer different Possibilities to increase the number of sections with the further sensor arrangement to capture.
  • the PRC absolute track itself can be used by using the in EP 1102040 - or US 09 / 716,338 - application described absolute registration reduced a single sensor and on the additional evaluation of the interpolated Incremental track is omitted, so that the circuit arrangement simplified for this for the detection of the sections with the lowest possible auxiliary energy or battery current gets along.
  • the absolute measuring system can also be used advantageously where that The measurement object itself does not have any specially applied markings, but a structured one Has material or a structured surface and thus scale with Measuring track includes.
  • the structured material or the structured surface only needs to be present in the area of application of the sensors and can therefore only include part of the measurement object, which is the scale forms.
  • Measurement methods are known which, for. B. via suitable optical components with light beams and sensors the determined periodic signals from z. B. paper, steel and plastic tapes, etc. evaluate in relative motion. about such evaluation methods give z. B. the patents DE 2 163 200 C2 and DE 2 133 942 an insight, the latter even undetermined and statistical fluctuating measurement signals from e.g. B. moving metal strips using the correlation method evaluate accordingly.
  • Such measuring objects are either suitable in their material properties themselves determined, e.g. B. with plastics, or processed by grinding, fine turning, etc.
  • Surfaces, e.g. B. pistons have the necessary structures for a suitable Measuring track for evaluation.
  • DE 3 418 854A1 and DE 3 4 181 190A1 are the desired ones for lacquer and resist layers using ultrasound Structures optically pre-structured and firmly fixed in the material using ultrasound, and also checked with ultrasound afterwards. So there are many physical measurement methods (e.g. electromagnetic radiation, laser light, sound etc.) by z. B. over the surface of moving measuring bodies as a scale Evaluate the corresponding measurement signals using suitable sensors.
  • the absolute value formation designed in this way in the respective route sections - entirely regardless of the chosen method of absolute value formation - is by means of Countable recording of the routes through the measurement track evaluation to the total absolute value added for distances of any length.
  • the sensor components are included the signal processing housed in the overall sensor. They are for a variety of angle and displacement measuring systems the same and therefore versatile.
  • the Scale can be produced in "endless length" and of these are simple as needed cut off any scale lengths.
  • the connections are also for data exchange and for parameterization expediently to those of the rotary and Angle encoder to be identical to ensure the advantageous continuity of the sensor systems for customer controls regarding commissioning, use and service guarantee. Above all, there are fully digital versions via SSI data exchange and parameterization advantageous.
  • Especially encoder systems with real-time signal processing offer several via the SSI clock signals that can be queried in parallel Sensors - each with a separate data line - the redundant sensor evaluation and are also in a length measuring system in a very dirty environment (both applicable on the sensor as well as on the scale).
  • the overall scale is now composed of several sections 1a to 1c. Under the track 2, an incremental track 3 is arranged, which serves to increase the accuracy of the respective value of the absolute track 2 and has the same overall length of the scale. Both track 3 and track 2 form the absolutely coded sections and they can be used individually or in combination by the further sensor arrangement for counting the sections.
  • track 4 with the same length as the sections, which is omitted according to the invention.
  • track 2 and / or 3 serve the sections recognizing by direction and location, or to capture and starting to be determined logically from a defined starting position. By this determination the "number" of the individual sections is determined
  • the invention is also intended to encompass the case where one for determining the number of the Part of the intended coding of the measuring track is superimposed, and the associated Sensors only record the coding assigned to them.
  • Fig. 2 shows the scale 1 in side view with a large number of partial areas, for. B. 1a to 1c. There are two staggered scanning heads 5, the Measurement results used for a redundant signal evaluation and in the control 6 are processed accordingly.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
EP03015252A 2002-07-06 2003-07-05 Système de mesure pour la détection de la valeur absolue d'angles ou de déplacements Withdrawn EP1387147A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002130471 DE10230471B4 (de) 2001-04-05 2002-07-06 Messsystem zur Absolutwerterfassung von Winkeln oder Wegen
DE10230471 2002-07-06

Publications (1)

Publication Number Publication Date
EP1387147A1 true EP1387147A1 (fr) 2004-02-04

Family

ID=30009824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03015252A Withdrawn EP1387147A1 (fr) 2002-07-06 2003-07-05 Système de mesure pour la détection de la valeur absolue d'angles ou de déplacements

Country Status (1)

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EP (1) EP1387147A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1783462A1 (fr) * 2005-11-08 2007-05-09 Carl Freudenberg KG Dispositif de mesure d'angle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648276A (en) * 1969-12-11 1972-03-07 Warner Swasey Co Segmented scale
EP0902255A2 (fr) * 1997-09-09 1999-03-17 Leopold Kostal GmbH & Co. KG Capteur d'angles
EP0995974A1 (fr) * 1998-10-24 2000-04-26 Fritz Kübler GmbH Zähl-und Sensortechnik Détecteur de rotation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648276A (en) * 1969-12-11 1972-03-07 Warner Swasey Co Segmented scale
EP0902255A2 (fr) * 1997-09-09 1999-03-17 Leopold Kostal GmbH & Co. KG Capteur d'angles
EP0995974A1 (fr) * 1998-10-24 2000-04-26 Fritz Kübler GmbH Zähl-und Sensortechnik Détecteur de rotation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1783462A1 (fr) * 2005-11-08 2007-05-09 Carl Freudenberg KG Dispositif de mesure d'angle

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